Error Fatal error: Call to undefined function: imagecreatefrompng() in c:\apache\htdocs\index.php on line 142
Código PHP:
<?php
////////////////////////////////////////////////////////////////////////////////
// Boosty's ASCII Artist 1.0
////////////////////////////////////////////////////////////////////////////////
// Converts PNG images into nice ASCII Texts
////////////////////////////////////////////////////////////////////////////////
// Author: Sebastian Röbke <[email protected]>
// Last modified: 2001-11-17
////////////////////////////////////////////////////////////////////////////////
// Imagefolder
$imagefolder = "./png/";
// Replace characters (from dark to light, 9 variations)
$replace_characters = array (
1 => "@",
2 => "#",
3 => "*",
4 => "+",
5 => ":",
6 => ".",
7 => "'",
8 => " ",
9 => " "
);
// Available Images as PNG (as set by $imagefolder)
$handle=opendir($imagefolder);
while ($file = readdir($handle)) {
if ($file != "." && $file != "..") {
$images[] = $file;
}
}
closedir($handle);
sort($images);
reset($images);
// Default Image
if (!isset($image) || !in_array($image, $images)) $image = $images[0];
// Default Quality
if (!isset($quality) || $quality < 1 || $quality > 10) $quality = 2;
// Default Fixed Char for Colorize mode
if (!isset($fixed_char)) $fixed_char = "@";
// Default Mode
if (!isset($mode)) $mode = "standard";
// string function hexColor (array $rgb)
// Convert the $rgb array to a hex value
function hexColor($rgb) {
return sprintf("%02X%02X%02X",$rgb["red"],$rgb["green"],$rgb["blue"]);
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Boosty's ASCII Artist</title>
<style>
body, input, select, option, p, td
{
font-family: Verdana, sans-serif;
font-size: 11px;
}
.image
{
font-family: "Courier New", Courier, monospace;
font-size: 8px;
line-height: 5px;
}
</style>
</head>
<body>
<div align="center">
<form action="index.php" method="POST">
<table border="0" cellpadding="0" cellspacing="1" bgcolor="#4e4e4e">
<tr>
<td>
<table border="0" cellspacing="0" cellpadding="4" bgcolor="#cccccc">
<tr bgcolor="#33ccff">
<td colspan="3" align="center"><b>Boosty's ASCII Artist</b></td>
</tr>
<tr>
<td colspan="3"><b>Choose mode</b></td>
</tr>
<tr>
<td colspan="3" align="center">
<input type="Radio" name="mode" value="standard"<?php if($mode=="standard") echo " checked"; ?>>Standard
<input type="Radio" name="mode" value="colorize"<?php if($mode=="colorize") echo " checked"; ?>>Colorize
<input type="Radio" name="mode" value="colorize_fixedchar"<?php if($mode=="colorize_fixedchar") echo " checked"; ?>>Colorize using character<input type="text" maxlength="1" size="1" name="fixed_char" value="<?php echo $fixed_char; ?>">
</td>
</tr>
<tr>
<td><b>Image</b></td>
<td><b>Quality</b></td>
<td> </td>
</tr>
<tr>
<td>
<select name="image">
<?php
while (list($key, $value) = each($images))
{
echo "<option value=\"$value\"";
if ($image == $value) echo " selected";
echo ">$value</option>";
}
?>
</select>
</td>
<td>
<select name="quality">
<?php
for ($i = 1; $i <= 5; $i++)
{
echo "<option value=\"$i\"";
if ($quality == $i) echo " selected";
echo ">$i</option>";
}
?>
</select>
</td>
<td align="right">
<input type="submit" value="Render">
</td>
</tr>
<tr bgcolor="#FFFFFF">
<td colspan="4" align="center">Written by <a href="http://www.sebastian-r.de">sebastian r.</a> | <a href="index.phps">View Source</a></td>
</tr>
</table>
</td>
</tr>
</table>
</form>
<span class="image">
<?php
// Load image
$im = imagecreatefrompng($imagefolder.$image);
// Get Image size
$width = imagesx($im);
$height = imagesy($im);
// Y
for ($y = 0; $y < $height; $y+=$quality)
{
// X
for ($x = 0; $x < $width; $x+=$quality)
{
// RGB Value of current pixel (Array)
$rgb = imagecolorsforindex($im, imagecolorat($im, $x, $y));
// Rounded Brightness
$brightness = $rgb["red"] + $rgb["green"] + $rgb["blue"];
// Choose replacing character
$replace_character_id = round($brightness / 100) + 1;
if ($mode=="colorize")
{
echo "<font color=\"#".hexColor($rgb)."\">".$replace_characters[$replace_character_id]."</font>";
}
else if ($mode=="colorize_fixedchar")
{
echo "<font color=\"#".hexColor($rgb)."\">".$fixed_char."</font>";
}
else
{
echo $replace_characters[$replace_character_id];
}
}
echo "<br>\n";
}
ImageDestroy($im);
?>
</span>
<p>
Original file<br>
<img src="<?php echo $imagefolder.$image; ?>">
</p>
</div>
</body>
</html> 
